I am currently on a project where we want to program via SWD, but also have the possibility to use JTAG for boundary scan if needed later on.
Some pins are used twice (eg. SWD: SWDIO, JTAG: TMS) and connect to different pins of the MCU (LPC540J16JBD100E).
- is this a problem, when I am using SWD, but also have a signal on JTAG pins (eg. PIO0_4 (TMS))
- do I need external resistors? For SWD I do not, but there is no information regarding JTAG in the datasheet.